What does the SVG Optimizer remove?

It removes XML comments, blocks, editor-specific namespace declarations and attributes (inkscape:*, sodipodi:*, dc:*, cc:*, rdf:*), the declaration, the xmlns:xlink namespace if no xlinks are used, and enable-background attributes. It also collapses whitespace between tags.

Will optimizing break my SVG visually?

No. The optimizer only removes non-visual metadata and editor artifacts that have no effect on how the SVG renders. Your shapes, colors, paths, and animations are preserved. Always test in your target environment after optimizing.

What is the 'Strip Unused IDs' option?

SVG editors often add id attributes to every element for their own internal tracking. If an id is not referenced by a url(#id), href, or xlink:href, it serves no purpose in the browser. This option safely removes such unreferenced IDs to further reduce file size.

Why remove the XML declaration?

The declaration is optional for SVG files used inline in HTML or as img src. Browsers handle UTF-8 SVG without it. Removing it saves a few bytes and is safe for most web use cases.

Is my SVG data sent to a server?

No. All optimization happens entirely in your browser using JavaScript string manipulation. Your SVG code never leaves your computer.

SVG最適化ツール

メタデータ、コメント、エディタ固有の属性を削除してSVGファイルを最適化・軽量化します。視覚的な品質を損なわずにファイルサイズを削減できます。

SVG入力

オプション

コメントを削除メタデータを削除エディタ属性を削除XML宣言を削除未使用IDを削除

使い方

1Paste your SVG code into the input area, or click 'Load Sample' to try an example.
2Choose your optimization options: remove comments, metadata, editor attributes, XML declaration, and optionally strip unused IDs.
3Click 'Optimize' to process your SVG.
4Review the stats showing original size, optimized size, and percentage saved.
5Copy the optimized SVG output using the 'Copy' button and use it in your project.

主な機能

Removes XML comments, metadata blocks, and editor-specific attributes (Inkscape, Illustrator)
Optional removal of XML declaration and stripping of unreferenced id attributes
Shows original size, optimized size, and savings percentage
Removes xmlns:xlink namespace automatically when no xlinks are used
All processing is done in your browser — your SVG never leaves your computer

よくある質問

詳しく読む

SVG Optimizer Guide: Reduce File Size Without Losing Quality